Natural numbers (N), integers (Z), rationals (Q), irrationals, and reals (R) — IITM BS previous year questions

Natural numbers (N), integers (Z), rationals (Q), irrationals, and reals (R) is part of Number Systems, Week 1 in Mathematics 1. Prasnya files every IIT Madras BS previous year question from this subtopic here, each one with a worked explanation. Take the whole set as a timed mock and you get accuracy, pacing and per-question analysis back.